How do you set date on Casio QA-300?

To set the date on a Casio QA-300, first press the "Mode" button until you reach the setting mode. Then, use the "Adjust" button to enter the date setting, where you can change the date using the "Search" buttons. After setting the date, press the "Adjust" button again to confirm and exit the setting mode. Finally, press the "Mode" button to return to the normal time display.